S/UNI®-JET Data Sheet
Released
Register 30BH: SPLR Status
Bit
Type
Function
Unused
LSS[2]
LSS[1]
LSS[0]
Unused
YELV
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
X
X
X
X
X
X
X
X
R
R
R
R
R
R
LOFV
OOFV
OOFV
The OOFV bit indicates the current PLCP OOF defect state. When an error is detected in both
the A1 and A2 octets or when an error is detected in two consecutive path overhead identifier
octets, OOFV is set to logic one. When the S/UNI-JET has found two valid, consecutive sets
of A1 and A2 octets with two valid and sequential path overhead identifier octets, the OOFV
bit is set to logic zero.
LOFV
The LOFV bit indicates the current PLCP LOF defect state. The LOF defect state is an
integrated version of the OOF defect state. The declaration/removal times for the LOF defect
state depends on the selected PLCP format. These are summarized in Table 12:
Table 12 PLCP LOF Declaration/Removal Times
PLCP Format
DS3
Declaration (ms)
1
Removal (ms)
12
E3 G.751
DS1
E1
1.12
25
20
10
250
200
If the OOF defect state is transient, the LOF counter is decremented at a rate 1/12 (DS3
PLCP) or 1/10 (DS1 or E1 PLCP) or 1/9 (G.751 E3 PLCP) of the incrementing rate.
YELV
The YELV bit indicates the current PLCP yellow alarm defect state. YELV is set to a logic
one when ten or more consecutive frames are received with the yellow bit (contained in the
path status octet) set to a logic one. YELV is set to a logic zero when ten or more consecutive
frames are received with the yellow bit (contained in the path status octet) set to a logic zero.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990267, Issue 3
104
PMC [ PMC-SIERRA, INC ]
